﻿OF 
  THE 
  WEKL0CK 
  SHALES, 
  379 
  

  

  As 
  I 
  am 
  not 
  aware 
  of 
  the 
  existence 
  of 
  any 
  special 
  terminology 
  

   applicable 
  to 
  fossil 
  Tubicolar 
  Annelida, 
  the 
  following 
  explanations 
  

   of 
  the 
  few 
  terms 
  I 
  shall 
  use 
  in 
  my 
  descriptions 
  may 
  be 
  appreciated. 
  

   Tube 
  : 
  the 
  whole 
  of 
  the 
  shell 
  of 
  any 
  one 
  of 
  the 
  species. 
  . 
  

   Superior 
  aim 
  illations 
  : 
  the 
  ring-like 
  divisions 
  of 
  the 
  walls 
  of 
  the 
  

  

  tube 
  which 
  show 
  structure 
  in 
  section. 
  

   Inferior 
  annulations 
  : 
  the 
  intervening 
  rings 
  between 
  the 
  superior 
  

  

  annulations 
  in 
  Tentaculites 
  &c. 
  

   Lateral 
  annulations: 
  the 
  prolonged 
  annulations 
  by 
  means 
  of 
  

  

  which 
  the 
  tube 
  is 
  attached 
  to 
  foreign 
  bodies. 
  

   Longitudinal 
  striae 
  : 
  markings 
  having 
  a 
  structural 
  character 
  which 
  

  

  cover 
  the 
  external 
  surface 
  of 
  one 
  genus 
  of 
  Tubicolar 
  Annelida. 
  

   Intersected 
  striae 
  : 
  striae, 
  longitudinal 
  or 
  transverse, 
  intersected 
  

  

  by 
  other 
  striae. 
  

  

  Subkingdoni 
  AOTULOSA. 
  

  

  Division 
  Beanchiata. 
  

  

  Class 
  II. 
  Annelida. 
  

  

  Order 
  III. 
  TUBIGOLA. 
  

  

  Body 
  protected 
  by 
  a 
  calcareous 
  or 
  arenaceous 
  tube. 
  Branchiae 
  

   attached 
  to 
  or 
  near 
  the 
  head. 
  

  

  Genus 
  Corntjlites, 
  Schloth. 
  

  

  In 
  this 
  genus 
  the 
  animal 
  was 
  solitary, 
  inhabiting 
  a 
  shelly 
  tube 
  of 
  

   carbonate 
  of 
  lime. 
  The 
  tube 
  gradually 
  tapering 
  and 
  slightly 
  flexu- 
  

   ous, 
  attached 
  by 
  its 
  smaller 
  extremity 
  to 
  some 
  foreign 
  body. 
  Walls 
  

   of 
  the 
  tube 
  very 
  thick, 
  composed 
  of 
  numerous 
  imbricating 
  conoidal 
  

   rings, 
  their 
  widest 
  edge 
  next 
  the 
  slender 
  base 
  , 
  subirregular 
  in 
  old 
  

   specimens, 
  more 
  or 
  less 
  distorted 
  or 
  oblique 
  in 
  the 
  young 
  ; 
  external 
  

   surface 
  obscurely 
  annulated, 
  finely 
  striated 
  longitudinally 
  ; 
  inner 
  

   surface 
  and 
  casts 
  scalariform, 
  with 
  two 
  or 
  three 
  longitudinal 
  furrows*. 
  

   The 
  only 
  well-known 
  species, 
  G. 
  serjiularius, 
  Seh. 
  

  

  Bef. 
  Schloth. 
  Petref. 
  t. 
  xxix. 
  fig. 
  7 
  ; 
  Sil. 
  Syst. 
  t. 
  xxvi. 
  figs. 
  5-8. 
  

  

  In 
  the 
  ' 
  Cambridge 
  Catalogue,' 
  p. 
  128, 
  Salter 
  describes 
  G. 
  serpu- 
  

   larius, 
  SchL, 
  as 
  " 
  a 
  shelly 
  tube, 
  with 
  cellular 
  varices 
  (knots) 
  like 
  

   Tentaculites, 
  also 
  grows 
  in 
  knots 
  of 
  3, 
  4-8 
  young 
  shells, 
  separating 
  

   afterwards." 
  

  

  Bef. 
  Siluria, 
  2nd 
  ed., 
  pi. 
  xvi. 
  figs. 
  3-10. 
  

  

  Loc. 
  and 
  Formation. 
  Typical 
  ComuUtes, 
  Wenlock 
  Limestone. 
  

  

  Dwarf 
  specimens 
  about 
  an 
  inch 
  long, 
  Upper 
  Ludlow 
  Rocks, 
  

   Westmoreland. 
  I 
  cannot 
  identify 
  any 
  of 
  the 
  species 
  found 
  in 
  the 
  

   Wenlock 
  shales 
  with 
  either 
  the 
  typical 
  0. 
  serpularius, 
  Schl., 
  or 
  the 
  

   dwarf 
  specimens 
  referred 
  to 
  by 
  M'Coy 
  in 
  his 
  Brit. 
  Palaeozoic 
  Fossils. 
  

  

  1. 
  CoEXTJLITES 
  SCALARIE0E3IIS, 
  n. 
  sp. 
  (PI. 
  XV. 
  figS. 
  1, 
  9 
  & 
  10.) 
  

  

  ? 
  Tentaculites 
  scalaris 
  of 
  Sil. 
  System 
  and 
  Siluria. 
  

  

  ? 
  Tentaculites 
  anglicus 
  of 
  authors 
  (part 
  of 
  Salter's 
  sp.). 
  

  

  * 
  Brit. 
  Pal. 
  Fossils, 
  p. 
  63 
  ; 
  and 
  Nicholson, 
  " 
  On 
  the 
  Genera 
  ComuUtes" 
  &c, 
  

   Am. 
  Journ. 
  Sci. 
  1872, 
  vol. 
  iii. 
  p. 
  203, 
  

  

  